In article <[EMAIL PROTECTED]>,
 Magnus Lycka <[EMAIL PROTECTED]> wrote:
...
> On the other hand:
> 
>  >>> class C:
> ...     a = [1]
> ...
>  >>> b=C()
>  >>> b.a += [2]
>  >>> b.a
> [1, 2]
>  >>> C.a
> [1, 2]
> 
> I can understand that Guido was a bit reluctant to introduce
> += etc into Python, and it's important to understand that they
> typically behave differently for immutable and mutable objects.

As far as I know, Guido has never added a feature reluctantly.
He can take full responsibility for this misguided wart.

   Donn Cave, [EMAIL PROTECTED]
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